GB2004653A - Semiconductor gas detecting elements - Google Patents
Semiconductor gas detecting elementsInfo
- Publication number
- GB2004653A GB2004653A GB7835502A GB7835502A GB2004653A GB 2004653 A GB2004653 A GB 2004653A GB 7835502 A GB7835502 A GB 7835502A GB 7835502 A GB7835502 A GB 7835502A GB 2004653 A GB2004653 A GB 2004653A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkali
- glassy
- borate
- oxide
- glass
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/14—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature
- G01N27/16—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of an electrically-heated body in dependence upon change of temperature caused by burning or catalytic oxidation of surrounding material to be tested, e.g. of gas
Landscapes
- Chemical & Material Sciences (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biochemistry (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Or Analyzing Materials By The Use Of Fluid Adsorption Or Reactions (AREA)
- Catalysts (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
This invention describes a catalytically inactive gas-detecting element for gas-measuring apparatus of the kind comprising a coil of platinum or platinum alloy 1 which is enveloped by a glassy-coated 3 body 2 of metal oxide. According to the invention the glassy-coating 3 contains a phosphate and/or a borate as a main component and an alkali oxide, an alkali hydroxide or an alkali earth oxide as an additional component. The main component may include compounds of gallium, tin, antimony or germanium. Such an element may be manufactured by applying a glass- forming substance to a metal oxide body from aqueous solution by dipping the body in a concentrated solution of the glass-forming substance and thereafter heating the body which has become impregnated in this way at a temperature of between 400 DEG C and 700 DEG C, preferably at approximately 500 DEG C. In specific examples, the body is dipped in a concentrated solution of an alkali phosphate or borate. <IMAGE>
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19772740158 DE2740158A1 (en) | 1977-09-02 | 1977-09-02 | CATALYTICALLY INACTIVE GAS DETECTING ELEMENT AND METHOD FOR THE PRODUCTION THEREOF |
Publications (2)
Publication Number | Publication Date |
---|---|
GB2004653A true GB2004653A (en) | 1979-04-04 |
GB2004653B GB2004653B (en) | 1982-07-14 |
Family
ID=6018258
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7835502A Expired GB2004653B (en) | 1977-09-02 | 1978-09-04 | Catalytically inactive gas-detecting elements |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS5449199A (en) |
DE (1) | DE2740158A1 (en) |
FR (1) | FR2402206A1 (en) |
GB (1) | GB2004653B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2125218A (en) * | 1982-08-05 | 1984-02-29 | Bacharach Instr Co | Catalytic gas sensor reference element |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3122662A1 (en) * | 1980-06-11 | 1982-04-01 | Mine Safety Appliances Co. Ltd., Reading, Berkshire | Electrically heatable element and method of producing it |
DE3906599A1 (en) * | 1989-03-02 | 1990-09-06 | Draegerwerk Ag | Compensation element for a measuring device for combustible gases |
DE4004977C2 (en) * | 1990-02-19 | 1994-01-20 | Auergesellschaft Gmbh | Catalytically inactive gas detection element and method for its production |
JP4571665B2 (en) * | 2005-02-22 | 2010-10-27 | エフアイエス株式会社 | Hydrogen gas sensor |
JP4559894B2 (en) * | 2005-03-29 | 2010-10-13 | シチズンホールディングス株式会社 | Contact combustion type gas sensor element |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1197251B (en) * | 1958-02-18 | 1965-07-22 | Nat Res Dev | Catalytically inactive, heated detector element for gas analyzers |
NL236206A (en) * | 1958-02-18 | |||
US3586486A (en) * | 1968-02-23 | 1971-06-22 | Bosch Arma Corp | Gas analyzer |
US3959764A (en) * | 1974-10-09 | 1976-05-25 | Dictaphone Corporation | Gas analyzing element |
JPS5227556A (en) * | 1975-08-27 | 1977-03-01 | Hitachi Ltd | Wiring substrate |
-
1977
- 1977-09-02 DE DE19772740158 patent/DE2740158A1/en active Pending
-
1978
- 1978-08-21 FR FR7824239A patent/FR2402206A1/en active Granted
- 1978-08-29 JP JP10544078A patent/JPS5449199A/en active Pending
- 1978-09-04 GB GB7835502A patent/GB2004653B/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2125218A (en) * | 1982-08-05 | 1984-02-29 | Bacharach Instr Co | Catalytic gas sensor reference element |
Also Published As
Publication number | Publication date |
---|---|
JPS5449199A (en) | 1979-04-18 |
GB2004653B (en) | 1982-07-14 |
FR2402206B1 (en) | 1980-03-21 |
DE2740158A1 (en) | 1979-03-15 |
FR2402206A1 (en) | 1979-03-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |